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2024 Vol.44, Issue 6 Preview Page

Research Article

Failure Mode Analysis for Accident Prevention in PV Systems

태양광발전시스템의 사고예방을 위한 고장모드 분석

Su-Jeong Oh1*
,
Chong-Min Kim2
,
Ju-Hee Jang3
오 수정1*
,
김 종민2
,
장 주희3
1Senior Researcher, Electrical Safety Research Institute of Korea Electrical Safety Corporation (KESCO)
2Principal Researcher, Electrical Safety Research Institute of Korea Electrical Safety Corporation (KESCO)
3Assistant Researcher, Electrical Safety Research Institute of Korea Electrical Safety Corporation (KESCO)
1한국전기안전공사 전기안전연구원, 선임연구원
2한국전기안전공사 전기안전연구원, 책임연구원
3한국전기안전공사 전기안전연구원, 주임연구원
*Corresponding Author
30 December 2024. pp. 105-115
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Abstract

The installation of photovoltaic (PV) systems has been increasing globally and so has the number of related accidents. In South Korea, many PV systems are installed in mountainous areas; hence, they are particularly vulnerable to natural disasters and safety incidents. However, most existing studies on PV system failures have focused on improving efficiency, paying limited attention to safety aspects. Furthermore, in many cases, when a PV accident occurs, the faulty equipment is simply replaced, and the system resumes operation without conducting and considering a thorough failure analysis. This study applies the Failure Mode and Effect Analysis (FMEA) method to analyze the PV system failure modes and prioritize risks. Failure modes are categorized based on major PV components, such as modules, inverters, junction boxes, connectors, and cables, with classifications for potential failures being associated with each component. A total of 29 failure modes were identified, and a survey was conducted among PV industry professionals to assess the severity, occurrence, and detection of each failure mode. Based on these results, Risk Priority Numbers (RPN) were calculated. Key failure modes, such as bypass diode connection failure, cable corrosion, and inverter switching element damage, were evaluated according to the FMEA criteria. Based on this evaluation, specific prevention and mitigation measures are proposed.

Keywords
PV systems
PV components
Accident Prevention
Failure Mode and Effect Analysis
Risk Priority Number
Failure Classification
키워드
태양광발전시스템
태양광설비 구성요소
사고예방
고장모드 영향분석
위험우선순위
고장분류
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 44
  • No :6
  • Pages :105-115
  • Received Date : 2024-11-15
  • Revised Date : 2024-11-26
  • Accepted Date : 2024-11-26
  • DOI :https://doi.org/10.7836/kses.2024.44.6.105
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